sunday morning might have us dropping into the mid '30's with patchy frost that will be the coldest. of this coming up ... temperatures today will be relatively cool but it will remain so tomorrow and sunday the colder moments will be in the pre-dawn hours on sunday ... it is an overcast day today with some drizzle downtown the rain is expected to pick up ... nine right now it is 59 degrees at o'hare the temperature at midway is around 60 degrees 62 along the lakefront here in chicago ... we won't see too much increase in temperatures today because of the cloud cover but out in north dakota they have freeze warnings in effect and freeze watches all over this day ... temperatures are in the mid-20s out there that's the cold air coming from canada sitting with us over the weekend ... this will moderate on monday there's a good chance we may get into the '70s by monday or tuesday ... not everybody will be getting frost the farther from the lake that you are the higher the probability ... there is plenty of moisture in the air and the rain to work with ... you can see tomorrow we expect